Non-interference signal-box.



c. E. BEACH & L. J. VOORHEES.

6 l 9 l 2 l M D d m m NON-INTERFERENCE SIGNAL BOX. APPLICATION FILEDFEB. 23, 1m

T E E H 4 s T E E H s 3 c. 1-:. BEACH 111 1.. 1111111111 15NON-INTERFERENCE SIGNAL 59x1 3 SHEETS-SHEET 2.

" Patented 1100.12,]91'6.

UNITED srrrrns PATENT OFFICE.

CLARENCE E. BEACH AND LEE 3'. VOORHEES, OF IBINGHAMTON, NEW YORK,ASSIGNORS,

BY MESNE ASSIGNMENTS. TO THE GAM A. CURPOBATION OF NEW YORK.

EWELL FIRE ALARM TELEGRAPH COQMPLNY,

NON-INTERFERENCE SIGNAL-BOX.

Specification of Letters Patent.

Application filed February 23, 1915. Serial No. 9,990.

are arranged both to control the effectiveness of the signali-ngcontacts and to control the running of the signaling train, althoughcertain features of this invention are adapted for use either separatelyor in combination With each other with many types of noninterferenceboxes, and certain features of this invention may be employed withoutother features to produce a highly efficient noninterference box, Whilewith the addition of other features a noninterference and succession boxis provided, and certain other features are adapted for a Separate usein connection with various forms of succession boxes.

An object of this invention is to pro vide a noninterference box inwhich the force of the noninterference magnet is more elfectivelyapp-lied, so as to require the expenditure of less electrical energy inattaining positive action in noninterfer nce mechanism.

Another object of this invention is to provide an absolutenoninterfcrcnce mechanism, adapted for use with various types of signalboxes, which will not act to interrupt the transmission of a; signalbecause of weaknessof line current unless such current substantiallydecreased after the transmission of a. signal has been initiated.

Other objects of this invention are to produce an absolutenoninterference signal box devoid of fineadjustments. economical tomanufacture, and not requiring skilled maintenance or readjustment inservice.

Still other objects are referred to in the following specification andmore particuout in the claims.

In att-aining the feature of this invention whereby the magnet ofa'signal box is more ctl'cctively at Binghamton. in the and useful 1mforce of the .noninterference applied. an operating force is providedfordisabling mechanism adapted to'prevent or defeat the operation of thesignaling contacts by the train, the structure moved by said force beingadapted to move independently of the noninterference armature, and

.carrying a part moving through a comparatively larger-ange and adaptedto be latched when the armature is in oneposition and unlatehed by acomparatively small movement of the armature toward its other position,so that the energy which must be applied to the armature by thenoninterfer ence magnet need only be such as will overcome the frictiondue to such coengagement, and the armature is not required at any timeto move against the pull of such force, or to store up energy therein.Said operating force is applied to such part at varying advantageso'that, when restrained by the armature controlled latch, said forcewill be acting at minimum advantage and therefore the frictional load tobe overcome by the movementof the armature is decreased to a. minimum.

in attaining the \vherehv an absolute noninterference signal box willnot act to interrupt the transmission of a signal because of suchweakness of line current that the noninterference magnet will not beadequately energized during closures incident to the transmission of asignal to prevent the noninterference mechanism acting to disableordefeat the action of the circuit controllers, a part moved by the trainis so connected with the noninterference armature that such part willact just prior to the comlueiiceinent of the test period preceding thetransmission of any signal, to apply a retractilc force, to saidarmature suhstantiall greater than any retractile force applied theretoduring the transmission of any signal.

in the drawings arr-ompanying and forming part of this application,asigna-l box is shown embod-yin; all of the features ofthis invention ina preferred form. but this invention is not limited to the structureshown. as many parts may he added or omitted, and the form andarrangement of parts may be altered in many respects, without departingfrom the spirit of this invention.

in the accompanying drawings, in which feature ,of this invention likereference characters denote the same parts throughout, Figure l is afront elevation of a noninterfering and succession signaling boxembodying the features of this invention; Fig. 2 is a top view of thesignal box shown in F ig; 1, with the noninterfermanually disengageablestopping mechanism of the signal box shown in Fig. 1, and partscooperating therewith and Fig. 6 is another detail view illustratingparticularly the restoring lever.

Referring to Figs. 1 and 3, the armature 11 is mounted on the carrier 13in suitable relation to the noninterference magnet 12. The carrier 13 ispivoted on the shaft 14 and one end of the retractile spring 153sconnected to said carrier. A determining lever 16 is loosely pivotedupon the shaft 14 and has an end 17 disposed in the path of the armature11. A spring 18 forms a yielding connection between the determininglever 16 and the carrier 13 and tends constantly to hold the end 17 ofthe determining lever 16 in engagement with the armature 11. Theprojections 19 and 20 carried by the determining lever 16 are adaptedto' form controlling means for parts engaging therewith, as hereinaftermore fully point-ed out. An extension 22 from the carrier 13 "isprovided with a stud and the dependmg hook wire (See Figs. 2 and Asuitable signaling train is provided comprising the shaft 25, gear 26and clockwork arranged to drive and govern the speed of said shaft andin any well known manner. The escape wheel 27 is suitably driven by thegear 26, and said escape wheel engages with the pallet 28, said escapewheel and pallet, with the fan 29 mounted on the pallet shaft, acting togovern the speed of rotation of thegear 26. A manually disengageablestopping mechanism provided. forthe gear 26 comprising the stop arm 30,the lug 31 carried by said arm being adapt ed to engage with the pin -32carried by the gear 26 when said arm is in a certain position, and to bemoved out of the path of said pin when said arm is in another position.A suitable manual operating lever 33 is provided for manually raisingthe stop arm 30, and a prop 34 having a shoulder 35 and inclined face 36adjacent thereto is so mounted in the path oi. the pin or projection 37carried by the stop arm 30 that when the stop arm is moved to a positionwhich carries the lug 31 out of the path of the pin 32, the pin 87 willbe engaged by tend to draw said arm toward the stop 40 Where the lug 31will be brought into the path of the pin 32. Separately insulatedcontacts 41 and 42ar-e mounted in suitable relation to the arm 30, and ashuntingcon tact 43 is mounted upon the insulating material 44 which issecured to the free end of the stop arm 30 in such position that whensaid stop arm rests against the stop 40 said shunting contact 43 willconnect the contacts 4-1 and 42, and when the pin '37 is supported bythe shoulder 35, saidcontact 43 will be ineffective. A stop 45 ismounted in the'path of the stop arm 30 in such position as to arrest themovement of said arm when it has been raised high enough to allow theshoul- The thread 49 is so formed in said worm that a tracer engagingsaid worm will be moved away from the flange 47 and toward the abutment48 when the. shaft 25 revolves in normal direction. The tracer 50 isconnected to the prop 34 by means of the uni.- versal joint 51, the freeend of said tracer being adapted to be brought into engagement with thethread 49. The pin 52 is carried by the prop 34. in such position withrelation to the tracer 50 that when said prop has been moved, throughthe engagement of the pin 2-37 with the inclined face 36, the free endof said tracer will be raised out of the path of the pin 48 and out ofthe thread 49.

' The spring 53 is so connected between the tracer.,5() and the pin asto tend to bring the free end of the tracer into engagement with thethread 49 and away from the end ing' end of mus, and for economy willarrest the movement of said tracer in response to its spring before theengagsaid tracer is moved far enough the abutment 48 to be carriedbeyond the end of the thread 49 farthest therefrom. The abutment i8 isso positioned with relation to the flange :7 that when the tracer 50 isbrought into engagement with the thread it) at the end thereof nearestto said flange. said tracer will be brought into the path of theabutment l8 when the shaft 25 has made such number of revolutions aswill cause the desired operation of the signaling contacts, and theengagement of the abutment lid with the tracer 50 will swing the prop 3ifar enough to withdraw .the shoulder from the path of the pin 37 so thatthe arm 30 will be pulled down by the spring 3)), thus carrying the pin3T along the inclined face 36 and swinging the prop 3i far enough tocause the tracer 50 to be disengaged from the abutment i8 through theaction of the pin 52, whereupon the spring will swing said tracer 50against the flange l7, and such dropping of the arm 30 will carry thelug 31 in the path of the pin 32 and thus arrest the running of thetrain.

Signal formulating mechanism is provided comprising contact operating,means moved by the signaling train, signaling levers adapted to beoperated thereby, and circuit controlling or signaling cont-acts carriedby said levers.

The contact operating means consists of a signal wheel having suitableteeth and notches formed therein for imparting the tended movement tothe signaling conin manufacture, and convenient adaptability shouldcomprise the sections 54 and which are fixed upon the shaft 25 (see Fig.3). The front section 54: of the signal wheel has notches corres'ionding with transmitted. while the rcar section 55 has away fromnotches corresp ind-'ngwith. the breaks of the signal to be.transmitted. v

Thesignaling lever 56 is loosely pivoted at 57 and is provided with aprojection 58 adapted to drop into the notches in the front; section 5of the signal wheel. and thesignaling lever 59 is also pivoted at 57 andhas a projection 60 adapted to drop into the notches in the rear sectionof the signal wheel. mounted upon, but suitably insulated from, thesignaling lever 56 near the free end thereof and comprises a jawcontact. The circuit opening blade contact 62 is similarly mounted nearthe free end of the signaling lever 59. The various pars of this signalformulating mechanism are of such relative construction and arrange ntthat as the shaft is turned in its orinal direction such relativemovement of the contacts 61 .lever 59 has the closures of the signal tobe The circuit closing contact 61 is' and 62 will be obtained as willalternately bringsaid contacts into engagement. with each other andseparate them.

The sections 54 and 55 are maintained in suitable position with relationto one another by means of the pin (3 -3 passing therethrough, and saidsections are so arranged that their relative positions upon the shaft 25may be reversed, so that the section 55 will be so placed as to coengagewith the projection 58 and section 54 will engage with projection 60.When these sections are arranged as shown in Fig. 3 the operation ofsaid sections will cause such relative movement of the signalingcontacts 61 and 62 as will produce makes and breaks of the circuit suchas are characteristic of a socalled open type signal wheel and whenthese sections are reversed, so that the section 55 is in front and thesection Qiis mounted behind it, the signal transmitted will be thatcharacteristic of a so-called closed type" signal wheel. In any eventthe section engaging with the projection 58 will raise the lever 56 to apoint so high that the contact 61 carried thereby will be above thelimit of the travel which may be imparted to the contact 62 by thesection of the signal wheel engaging with the projection 60, and thenotches are always so arranged in the two sections that when the beenraised through the en gagement of the inclined face of any notch withthe projection 60, and before said lever is raised to ti 2 highest pointto which it is carried by the section coe'ngaging therewith,

the projection 58 will be permitted to drop into a notch in the frontsection so as to provide an instantaneous action in closing the circuit,and thereafter when an inclined face of any notch of the frontsection isin close proximity to the inclined face of the projection 58 but justbefore engaging therewith a notch in the rear section will be presentedto the projection 60 and thus allow the arm 59 to drop just before thearm is 'so raised as to carry the contact 61 away from the contact 62,and thus provide instantaneous action in opening the circuit.

Inasmuch as the contact 61 always acts to instantaneously close thecircuit, and the contact 62 always acts to instantaneously open thecircuit, said contacts are herein referred to as circuit closing andcircuit opening contacts respectively.

A stop (it is carried by the circuit opening contact 62 and is arrangedto limit the distance which said contact blade 62 may enter the contactjaws 61, so that said contact jaws may be formed of pliable material-soas to permit the blade GZ'to readily penetrate .between them and therebyobtain a rubbing contact on both sides of said bladesimilar to that ofan ordinary knife switch while maturely brought into engagement with theinclined face of any notch of the front section 54.

While it is preferable to use the contacts- 61 and 62 carried by thesignaling levers 56 and 59, respectively, so as to obtain theinstantaneous action both in making and breaking the circuit, it isevident that many features 'of-this invention may be advantageouslyutilized in connection with other well known forms of circuitcontrolling contacts, but in any event the contacts must be socontrolled by the signaling lever 59 that the circuit will be closedwhen said lever is raised by the signal wheel and the circuit will beopened when said lever is allowed to fall.

The end of the signaling lever 59 is extended in the direction of theprojection 20. and is so formed in relation thereto that when theprojection 60 has dropped into any of the notches of the section of thesignal wheel coiiperating therewith, said end will lie in the path ofthe projection 20 and thereby hold the determining lever 16 in )ositionto retain the armature 11 in attracted position and when said signalinglever 55) occupies a position at or above that to which it may be raisedby the engagement of the signal wheel therewith. the said end of saidsignaling lever will be. raised above the projection E20 and thus permitthe retraction of the armature 11.

The catch arm (35 is pivoted on the signaling lever 59 at (ill andcarries a projection (37 which. for convenience 1n manutacture,

extends in the path of the rear section 55 ot the signal whee] so thatsaid catch arm may be raised and dropped substantially in step with thevibrations of said signaling lever 59, in any event this catch arm mustbe raised just prior to the initiation of the transmission of a signal.and should not be raised at any time when the signal wheel is not inposition to support the signaling 'lev-er 5E.) through its engagementwith the projection (ill thereof. for reasons which will we 1e e a' .1'no i L: a l l r111 tte 1 1 tall; l in l a a. f a i l catch (in is caiiudb tln catch arm 05 and is arranged to project rearwardly from said armpast the signaling levia- A holder to is pivoted at T0 and has theshoulder Tl adapted to be engaged by the catch 68 and has the holdingnotch 72. and,

wheel.

contact 61, and will raise said contact til high enough to carry theprojection 58 out ofthe path of the section 51 of the signal wheel, andso that when said holder is in another position, the holding notch 72will lie' in the pathof said projection 74: andthus prevent thesignalinglever 59 from rising high enough to maintain a connection between thecontacts 61 and 62 when the sig naling 1ever 56 has been raised to thelimit of the travel which may be imparted thereto by the signal wheel.

' The hook 73 is-so formed and bears such relation with the pivot thatwhen the holder 69 is moved from the position where "the notch 72 is inthe path of the projection the signaling lever 56 as to tend to hold theprojection 58 in engagement with the signal The operating spring 76 isso applied to the catch arm 65 as to tend to main tain both thesignaling lever59 and the pro jection 67 carried by the catch arm (35 incu gagement with the signal wheel. .In other words, the operating springis so applied to the catch arm that either the projection 67 or thecatch 68 may act as a fulcrum around which said arm may be rocked bysaid spring and through its pivot connection 66 holds the signalinglever 59 in engagement with the signal wheel. The catch arm 65 thereforeforms means operable by the train whereby the movement of. the disablingmechanism, comprising the holder 69. from its disabling position whereit holds the signaling lever 59 in elevated position to the positionwhere it will permit the projection 60 carried by said signaling leverto drop into the notches in the rear section of the signal wheel andthus produce breaks in the signaling circuit. will be permitted onlywhen said rear section is in position to support said projection (50 inelevated positiom'which position occurs only during closures of thesignaling contacts.

The arm 77 is fixed upon the shaft 7 8 which shaft also has the stop arm30 fixed thereon in suitable relation to the arm 77 so that said arms 30and 77 W11] move together.

The restoring lever 79 see Fig. (l is pivoted on the frameat 80 and oneend of said restoring lever is adapted to be engaged by the free end. ofthe arm 77 so as to be moved thereby and the other end of 'saidrestoring lever carries the pivot 81, which has the extension 82thereupon which lies in the path of the signaling lever 5.9. and is sopositioned in relation thereto that when the restoring lever 79 occupiesthe position in which it will be held by the arm 'I'Twhen the stop arm30 is in such' position that the lug 31 thereon lies in the path of pinsaid extension 82 will raise the signaling lever 59 to the position towhich it may be raised by the engagement therewith of the hook T3carried by the holder 69. Said pivot 81 and extension 8:2thereforeconstitute a connection operated by the restoring lever 79adapted to act to render the contacts (31 and 2 unresponsive to therunning of the train whenever the stop arm 30 is in position to arrestthe running of the train.

The latch arm 83 is mounted. upon the pivot 81 to turn freely thereon,and the hook S-l is formed in the free end of said latch arm in suitablerelation to the projection 19 so that when the determining lever l inone position,- said projection 15) will lie in the path of said hook andso that said projection will be withdrawn fromthe path of said hook whensaid lever 16 is moved by a very slight retractive movement of thearmature ll. lhe slanting face is formed in suitable relation to thehook til so that when said hook is below the projection 19 and. thelatch arm 83 1s raised while. the armature ll is in attracted position,said 19 and thereby swing the lever 16 to carry said projection out atthe path of said hook and permit the latch arm .53 to be raised to aposition where said projection 19 may be carried in the .path of hook 8iand thereby latch said hook.

The projection 86 carried by the latch arm 83 is so formed with relationto the tongue 87 formed in the signal wheel hub 88 that the engagementof said tongue with said projection may impart such movement to thelatch arm 83 as will raise the hook 841: to latching position where itmay be engaged by the projection 19.. Said projection 86 and tongue 87therefore form means operated by the train in running for adjusting theretractile spring 1.5 of the latch arm 83 to apply a maximum tension tothe noninterte'rencc aruiature 11v at least once, during cach rotationof the signal wheel.

The cam face 85$) is carried by the latch arm 83 in such position withrelation to the holder (31. that when-the restoring lever 79 is in theposition which it occupies when the stop arm 3-30 is in position toarrest the run- .ningot' the train, the engagement of said cam tace withthe face 90 of the holder (3i) will be such as to swing said holder tothe position whereit will permit the signaling levcr 5!) to beraised outof cngagemcut with slanting face will engage with the projection thesignal wheel, and where it will carry the shoulder 71 in position to beengaged by the catch (58. and so that when the restoring lever '79 is inthe position which it occupies when. the stop arm 30 has been raiseduntil'the pin 37 is supported by the shoulder 35, said cum face willpermit the holder 9 to move to the position which will carry the hook 73out of the path of the projection 74 and will bring the holding notch 72said projection 74 when the latch arm 83 is in position where it holdsthe hook 874 in posi-' tionto be engaged by the projection 19, and onits pivot 81 so that the hook Si is a suitable distance below theprojection 19, said cam face will move the holder 69 to the positionwhere the hook 73 will engage the projection Tl.

From the foregoing it will be seen that the in the path of so that whenthe latch arm has turned latch arm 83 and the holder 39 and partscoconstantly tending to act to render the sig-' naling contactsunresponsive to the running oithe train.

it will further be seen that the cam face 8S) forms 'a slack connectionbetween the latch arm 83 and the. holder ()9 whereby the downwardmovement of the latch arm after it has been disengaged from theprojection 19 may move the holder to disable the signaling contacts'andmay retain the holder in disabling position without .thereby obstructingthe movcmentot the latch arm as the hook 8% is out of the path of theprojection 19 when said latch arm is in disabling position. i

An end o1 the armature retractile spring 15 is so connected to" thelatch arm as to constantly impart thereto a tendency to movecoiinter-clockwise, and that I when the hook Hat is in engagement withthe projection 19 the operative effect of said spring upon said latcharm will be applied thereto only at such advantage as to be capable ofsafely moving said friction of its pivot in counterclockwise direction,and so that the operative effect of said spring will be applied tosaidl'atch arm when the book 84 has moved out of engagement, with theprojection 19 in countercloclo ,wise direction at such advantage as tobe capable of safely in'ioving said latch arm to operate the holder) toraise the signaling lovers 59 and 5(3, and such amount of travel ispermitted the latch arm 83 that when said latch arm has so moved, thetension of said spring will be mate ially decreased. and therefore therctractile force applied by said to the armature 11-when the latchspring I arm H has acted to disable the signaling latch arm against thefor the disabling mechanism, and controlled by the armature through theen: gagement of. the hook 84 with the projec-.

tion 19, and the spring 15 constantly im. parts a tendency to said latcharm to act to move the h0lder.69, forming part of the disablingmechanism, to the position where it will render the contactssfil and 62unresponsive to the running of th train.

' The hub 88 should preferably be mounted upon the shaft 25. in suchposition with relation to the pin 32 that when said pin is holding thetrain at rest by engagement with the lug 31, the tongue 87 will supportthe-latch arm 83. in such position that it may be raised to the positionwhere the hook 84 may be engaged by the projection 19 when the train 1sset in motion, and so that when, the

train is set in motion, said tongue will be quickly withdrawn frOm thepath of the projection 86 so as to permit the latch arm 83 to drop ifnot supported by the projection 19 remaining in the path of said hook84.

The detent 91 has the forked end 92 adapted to receive the stud 23 so asto be moved thereby, and said'detent is pivoted at 93 to the restoringlever 79 near the end of said leverwhich carries the pivot 81. The end94 of the detent 91 is so formed that it is adapted to engage the fan 29to stop the train, and said detent is so constructed and arranged thatwhen the restoring lever 79'is in the position which it occupies whenthe lug 31. is in the path of the pin 32 said detent will be renderedineffective to engage the fan 29, through the lifting of the pivot 93carrying the end 94 out of the path of said fan, but when the lever T9is in the position which it occupies when the pin 37 is supported by theshoulder 35, the pivot 93 will be dropped far enough so that when thestud 23 is in the position which it occupies when the armature 11 is inretracted position, the end 94 will lie in the, path of the fan 29 andthus arrest the running of the train, and when the armature 11 is inattracted position the stud 23 will swing the dejent 91 so as to carrythe end 94 out of the path of said fan.

When this signal box is in normal condition (as shown in Figs. 1, 2 and5),the

stop arm 30 is held by the spring 39 in enface 89 with the facemaintains the holder 69 in looking position, thereliy permitting thecatch 68 to lie in the path of the shoulder 71 of saidholder. The tongue9 87 is in such engagement with the projection which will bring saidhook in the path of and slightly below the upper edge of the a proection 19, and will bring the projection 86 in such relation to thetongue 87 that a comparatively slight movement'of the shaft 25 willcarrysaid tongue 87 opt of the path of said projection 86. The p'rop34 ismaintained in its extreme left hand position by the engagement of thepin. 37 with the inclined face 36 thereof, and thereby holds thetracer-50 out of the path of the abutment 49 and thread 49 of the worm46 by means of the pin 52 carried'by said prop 34.

Owing to the stop arm 30 being in its lower position, thenoninterference, magnet and the signaling contacts will be shunted by.

the shunt connection established between the engagement therewith, andthe armature 11 is in retracted position, holding the pro'-- jection'19out of the path of the hook '84 and the projection 20 in the path of thefree end of lever 59.

The operation of this signal box to condition it for the transmission ofa signal is, for convenience, herein referred to as f pulling the box,and is accomplished byapressing downwardly upon the handle mounted uponthe front end of theoperating lever 33 (see Figs. land 2). Such pullingof this box acts to condition it for operation as 'followsr-The movementof lever 33 lifts stop arm 30, thereby so moving the contact, 43 as tobrealr the shunt around the signal-- ing contacts and thenoninterference mag net, and carrying the pin 37 out of the path of theinclined face 36 and above theshoulder \Vhereupon theprop 34 will moveto such position as to bring said shoulder 35 into the path of said pin37, to retain the stop arm in elevated position, and ,to

gages the stopping mechanism from the train. The coincident movement oftho-11estoring lever 79 so lowers the pivot 93g1s to bring the-end 9% ofthe detent 91 into the path of the fan 29 if the armature 11 is inretracted position, and such movement of the restoring lever 79 alsolowers the pivot 81 so as to carry the cam face 89 out of the path ofthe curved face 90 of the holder 69, and carries the extension '82 outof the'pathi;

of movement of the signaling lever 59. Said holder will be heldagainstsuch movement as will release the signaling lever 59 by theengagement of its shoulder 71 with the catch US.

The operation of this box after being pulled in a normal circuit at atime when no other signal is in course of transmission upon said circuitis as follows: When the contact i3 is withdrawn from engagement with thecontacts 41 and all the line current will be forced to flow through thenoninterference magnet 1.2, and said magnet will thereupon be energizedand cause the armature 11 to anove against the tension of the springs 15and 18, the tension of the spring 18 being applied because thedetermining lever 16 is held against movement with the armature 11 bythe presence of the hook Si in the path of the projection 19, and suchmovement of the armature 11 will further act to withdraw the end 9i ofthe detent 91 from the path of the fan 29 and thereby permit the trainto run, and will permit the tracer 50 to move into engagementwith thethread at?) of the worm in. lVhen the train commences to run in responseto its being released from .the restraint of .the detent 91, the actionof the tongue 87 upon the projection 96 will raisethe arm 83 somewhathigher, thereby imparting additional tension to the armatureretractilespring 15 while continuing to apply the tension of the spring18, both oi said springs thus tending to retract the armature 11,however. the armature 11. will remain in attracted position because thenormal line current which is flowing through the magnet 12 sutlicientlyenergizes magnet 12 to overcome both of said sprii'igs, and thecontinued movementof the tongue 87 will raise the latch arm 83 highenough to carry the hook Si above the projection 19, whereupon thespring will swing the lever 16 so as to carry the projection 19 into thepath of the hook 8i, and at the same time swing the projection 20 but ofthe path .of the free end of the-signaling lever 55 and thereafter aslight additional movement of tlnr shaft 23 will carry the tongue 9? outof the path of the projection 5i ud thus per mit the hook Si to dropupox and be supported by the projection 15). The signal wheel sectionsbeing arranged as shown in Fig. 5 so that the makes and breaks of thesignaling circuitwill be those characteristic of the operation of anil-(illlhll open tvpe' signal wheeh the train will continue run-- ningfor a time longer than the longest closure in any signah and throughoutsaid time a notch in the se tion'SB ol' the sifiual wheel will bepresented to the projections and (37, but at thrtermiuaiion of such timesuch not h will end, and ihe inclined face to theri ht of such notchwill be bromrhl into engagement with the projection 67 and with theraised portion to the right of said' inclined face, and said raisedportion of the signal wheel will prevent the signaling lever 59 fromdropping far enough to open the circuit between the signaling contacts.\Vhen said lncllned face of the section of the signal wheel is thusbrought in the path of the projection (30. a notch in the section 54will be presented to the projection 58. After the shaft '25 has furtherrotated asuitable distance, the inclined faceto the; right of such notchin the section 54: will be brought adjacent to th v said projection andthereupon a notch in the section will be brought into the path of theprojection no, whereupon-the signaling lever 59 will drop. and thedownward movement of the signaling lever 56 will be so arrested as topermit the circuit opening contact 6:2 to be moved out of engagementwith the circuit closing contact oi through the action of the operatingspring Til. If however said contacts are welded or for an} other reasonstick together, the engagement. of the inclined fare of the notch in thesection 54 of the signal wheel will raise the signaling lever 56 stillhigher. and thus bring the projection 7 carrie by the signaling levep 59into engagement with the holding notch 72 in the holder (39. therebyarresting the upward nu'n'emcnt of the signaling lever 59 and ap plyingthe force of the rum'iing train to assist the spring To in separatingsaid contacts. Thus in any event the contacts will become separated. andthe movement of con-' tact U2 away from the contact ()1 will bepracticallv instantaneoim and thereby eifective-ly break the circuitbetween said contacts. and as the signaling lever so drops in carryingthe contact (32 a way from the .coi'itaci (31. the free end'of saidlever willpass to the right of the projection 20 and thus lock thedetermining lever i l and the armature ll against retrartive movement.Upon further rotation of the shaft the inclined wall to the right of thenotch in section 55 into which projection 60 has dropped will raise thesignaling lever :39 almost to the position where the contact 62 willtouch ihcrontact (3] before a notch in section Si is presented to theprojection 55. of the signaling lever 5(3. and thereupon such notch willbe presented and allow the said signaling lever so to drop and thusinstanthereto.

taneously close the current path between said contacts, and thereafterthe further rotation of the shaft 25 will cause the signaling lever 59to be raised slightly higher so as.

ing contacts as will produce the intended makes and breaks in thecircuit connected As the shaft revolves the tracer 50 will be carriedagainst the tension of spring 53 toward the path of the abutment 48 byits engagement with the thread wand, upon said shaft 25 con'ipleting theintended number of rotations, the abutment 48 will be brought intoengagement with the free end of said tracer 50, and will act throughsaid tracer to force the prop 34 to such position as will withdraw theshoulder 35 from the path of the pin 37, whereupon the spring 39 willmore the stop arm 30 downwardly and thus carry the pin-3'?- inengagement with the inclined face 36 so as to swing the prop 34. to aposition where the pin 52 carried by said prop will lift the-tracer 50out of the thread 45) and out of the path of the abutment 48, so thatsaid tracerwill swing toward the flange 47 in response to the tendencyof the spring 53. Upon this downward movement of the stop arm 2-30 theshunt contact 43 will connect with contacts 41 and 42, the lug 31 will,be brought into the path of the pin 32, the end 94 of the detent 91 willbe carried out of the path of the fan 29, the extension will raise thesignaling lever 59 to its upper position, the cam face 8!) will swingthe holder (3!) so as to permit the signaling lever 5!) to be so raisedand to permit the catch (38 to move into the path of the shoulder 71 ofsaid holder, and the arn'iature 11 will "be permitted to move toretracted position owing to the free end of the signaling lever 59 beingthus raised and the magnet 12 being dei nergized due to the closing ofthe shunt contacts 41, 42 and 43, but the train will continue runninguntil the pin 2-32 is brought into engagement with the lug 31, thusreturning all parts to their normal condition.

The operation of this box if pulled when the line circuit isbrokcn doesnot extend be yond the operation of parts'described in coniiection withthe pulling of the box as, since the armature 11 remains in retractedposition, the end 94 of the. detent 91 is brought into the path of thefan 29 when the stop arm 30 is manually raised before the lug 31 iswholly withdrawn from the path of the pin 32, and no'movement of thetrain will therefore take place so long as the circuit stands open.

l The operation of this box when it has been pulled on open circuit andthe circuit is subsequently closed, is as follows: When this box ispulled on-open circuit, the train is held against running by theengagement of the end 94 of detent 91 with the fan 29 j as justdescribed, but when the circuit is closed while the box is so heldagainst running, the energization of the magnet 12 incident to saidclosure will cause the arma ture 11 to move to attracted position andthus swing the detent 91 to such position that the end 94 will bewithdrawn from the path of the fan 29, and if the signaling circuitremains closed thereafter at' points external to this box, the operationof the box will continue as hereinbefore described in connection withthe pulling of the box under" normal circuit conditions.

The operation of this box when pulled after another box has commencedthe transmisison of its signal, is as follows: If, at the instant thatthis box is pulled, the line circuit stands open incident to thetransmission of the signal of the box already in control ofthe line, theend 94 ofthe' detent 91 will remain in engagement with the fan 29, andthe train of this box will not commence to operate until the circuit isagain closed. However upon the first closure of the circuit,

mcnce to run, and upon each break foll0wing such a closure, the armature11 will retract and the odd 94 willagain engagethe fan 2!) and stop thetrain. After one or more of such closures, the'shaft 25 will have beenpermitted to rotate far enough to withdraw the tongue 87'from the .pathof projection 86, whereupon the latch arm 83 will move downwardly ihresponse to the tension of the retractile spring 15. As the train runsfor a time longer than the longest closure in any signal afterthedisengagement "of the tongue 87 from the projection R6 and before thesignaling contacts are permitted to act to make the first break for thesignal, it is evident that any closure which causes the detent 91 to bewithdrawn from the path of the fan 29 at a timewhen such withdrawal willpermit the tongue 87 to be carried out of the path of the projection 86will end before such test period has been completed, and thereupon thearmature 11 will retract, carrying the projection 19 out of the path ofthe hooktll, whereupon the arm 83 will move downwardly and thus swingthe cam face 89 to a position which will cause the hook 73 to engage theprojection 74 and lock the signaling lever 59 in elevated position.While the latch arm 831s in its lower I with the projections 5.8,and 60of the signaling levers and therefore no relative move-' ment of thesignaling contacts Will result.

from such rotation of the signal wheel, but, during all breaks in thesignaling circuit the detent 91 will engage the fan 29 and prevent thesignaling train from running, and during, closed circuit intervals thearmaturell will move to attracted position and thus Withdraw the detent91 from the path of the fan 29 and permit the signaling train to run.With the signal wheel sections arranged, as already stated, to cause theformulation of a signal characteristic of a so-called open type signalWheel, the closures are of very short duration and merely last longenough before each-break to give ample time for the magnets in thecircuit to properly respond to the current flow therethrough, and duringall of the remaining interval between breaks the circuit is held open,therefore it will be found that the sha'ft 25 Will make less than onerevolution as the result of the closures resulting from the transmissionof the desired nhmber of rounds ,comprising'the signal of an- .otherbox, "and, When the signal of 'such' other box has been completed andthe cir cuit is finally closed thereafter, the armature 11 of'this boxWill move to and remain in attracted position and this box Will rununtilthe tongue 87 engages theprojection 86 and thus raises the latch-arm S3and carries the hook 84 past the projection 19, in doing Which the face85 of said hook will force the projection 19 slightly to the right untilsaid hook 84 is above said projection, whereupon the spring 18 willswing said projection into vthe path of said hook and immediatelythereafter the tongue 87 will disengage the projection 86 and this boxWill then proceed with the transmission of its signal in the manner.already described.

If. two of these boxes are pulled at 01" about the same time, so thatthe signal Wheels of such boxes reach the point Where they are adaptedto act to cause the circuit to be broken at the signaling contacts oneslightly ahead of the other, it is evident that upon the circuit beingbroken by the contacts of the box which first acts to break the circuit,the armature of the other ofsaid boxes Will retract and its. latch arm.83 will drop and thereby lock its signaling contacts. After the firstbox has completed the transmission ofits signal, the second box Willproceed in the manner hereinbe fore described, as when pulled afteranother box has. commenced the transmission of its signal. Theoperationof'two of these boxes if pulled so as to break the circuit attheir respe tive ignaling contacts simultaneously is as follows: Thedetermining levers 16 of both boxes Will be looked upon the first breakin the, circuit as both signaling levers 59 will drop at the same time,and thereafter the signaling levers of said boxes may operate in unisonfor" several strokes if the trains 'of such boxes areso nicely adjustedthat the notches in their respective signal Wheels will be presented totheir corresponding co-engaging signaling levers at exactly the sametime, but upon the 'first occasion \ivhen the signaling lever 59 .of oneof said boxes drops, or is in its lower position, at a time when thesignaling lever 59 of the other of said ,boxes is raised high enough tobring its free end above its co-engaging projection 20', the armature 11-of'the box having its le er 59 in such elevated position will retractupon the with drawal of the-restraint of the deternlhning' the book 84lies in the path of theprojection 19 so that it will not permitthedetermining lever16 to move with the armature 11, and therefore themovement of the armature to its attracted position is resisted by theforce of the, spring 18 in addition to, the force of the spring 15.Hence the armature 11 will remain -in retracted position unless the linecurrent is strong enough to so energize the magnet 12 as to overcomeboth of these springs and thus Withdraw the detent 91 from the path ofthe fan 29. When the magnet is so energized, the train will commencerunning and thereupon the tongue 87 will raise the arm 83 somewhathigher, thus first imparting an additional retractile force to thearmature 11 through the additional stretching of' thespring 15. If thetrain is not stopped on account of such additional retractile force; thehook 81 will be raised above the level of the projection 19, and the end17 of the determining lever'lfi will move against the armature 11thereby relieving said armature from the retractile force of the spring18 and leaving it subject only to the retractile force of the spring 15.

From the foregoing it is apparent that any line current-strength whichis suflicient to causethe armature 11 to move to release the train fromthe detent 91 against the retractile force of the spring 18 While thehook 84 is? in the path of the projection 19, will be suiiicient toretain the armature .11 in its attracted position during the closed arrcircuit periods incident to the transmission of the signal of this box,and it will. thus be seen that any current strength Which will permit asignal to be initiated Wlll retain the armature mattracted positionthroughout the transmission of such signal. After this 'box hasbeeninterfered with, and has come to rest due to a, circuit inter ruptionincident to the transmission of the signal of some other box, the"current strength may thereafter be so substantially decreased (2191136111 the serial inclusion in its circuit of the magnets of a pluralityof other boxes which may be pulled at or about the same tirne) that,with the normal tension of the spring 15, the added air gap between thearmature and magnet, and the, frictionincident to withdrawingthe detent91 from'engagement With the fan 29, the armature would not be moved toattracted position even though the line current Was still. strong enoughto assure the transmission of a signal if the train Was once started,

but, owing to the peculiar construction of this box, the tension 01 theretractile spring 15 is substantially decreased Whenever the latch arm83 swings to lts lower PQSliilO'Il, so

- that the armature'll will be permitted to move to attracted positionupona comparat vely slight energiz'ation off the magnet 12. However,even under these clrcumstances the transmission of a'signal Will not beinitiated unless the .line current strength is sulhcient to insure thecompletlon of such signalffor the reason that the latch arm 83 must beraised by the tongue 87 before a signal can be initiated when the boxhas once been interfered with, and when so raised the spring 15 will berestored to substantially normal tension and the face 85 of the hook 84.carried. by said latch arm will act against the projection 19 to stretchthe spring 18 so as to tend to move the armature 11 to retractedposition, and the strength of said springs 15 and 18 is so proportionedt0 the power and permeability of the magnet 12 and armature 11 thatunless the ciilrrent through magnet 12 is $111?- ticicnt to so energizesaid magnet as to prevent retraction ofthe armature 11 under.

the tension of the retractile spring 15 with in the time which elapsesduring eachclosure of the signaling contacts While the free end of thesignaling 1ever59 i's-out of the path of the projection 20, said springwill cause the retraction of said armature and prevent the initiation ofthe signal.

l-laving now fully described our inven tion, what We claim and desire tosecure by LettersPat-ent oi ,the United States is: 1nd signaling train,signaling contacts operable thereby, t noninterference mag-' net, anarmature therefor, disabling means controlled by said armatureconstantly. tend to act to render said contacts-unrespon neonate sive tothe running of the train, an actuating spring, one end of which isconnected "to said meansyand the. other end to the armzv ture so thatwhen thesignaling contacts are disabled by said means the force appliedto said armature by said spring will be substantially less than whensaid signaling contacts are free'to act.

2. A signaling train; signaling contacts operable thereby; anoninterference -magnet; an armature therefor; disabling meanscontrolled by said armature adapted to render said contacts unresponsiveto the runningof the'train; an actuating spring, one

'end of which is connected to said means,

and the other end to the armature; and meansoperated. the train inrunning for moving the disabling means to adjust said spring to amaximum tension at predeter-- mined intervals during the runningofthetrain. i

r 3. A signaling train; signaling contacts operable thereby; anoninterference magnet; an armature therefor; disabling means controlledby said armature adapted to reinder said contacts unresponsive to therunning of the train; "an actuating spring, one end of which isconnected to said means, and the other end to' the armature; meansoperated by the train in running for moving said disabling means toadjust said spring to a maximum tension at predetermined intervalsduring the running ofthe train; and means governed by the positionoi thearmature for retainingsaid maximum ten-' sion While the armature remainsin attracted pos tionm operable thereby; a noninterference mag} net; anarmature therefor; d1sabl1ng means controlled by said armature adaptedto render said contacts unresponsive to the run ning of the train; anactuating spi'ing, one end of which is connected to said. means, and theother end to the armature; means operated 'by'the train in running formoving the disabling means to adjust said spring to a maximum tension atpredetermined 1ntervals during the running of the train;

and means governed by the position of the armature for retaining saidmaximum tension While the armature remains in attracted position, andfor decreasing said tension upon retraction of the arnlature.

5. A slgnallng train; slgnalmg contacts operable thereby; anoninteri'erence mag not; an armature therefor; disabling meanscontrolled by said armature adapted. to render said. contactsunresponsive to the run ning of the train, when in one position, andadapted to assume a. sccondposition render mg said contacts responsiveto the running of the train; an actuating spring, one end.

(if-Which is connected to said means, and

the otherend to the armature, and means A signaling train; signalingcontactsgoverned by. the position of the disabling retractile' springwhenever said disabling means for suitably varying the tension of meanshas acted in response to the retraction of said armature.

7. A signaling train; signaling-contacts operable thereby; anoninterference magnet; an armature therefor; sprin actuated disablingmeans constantly tending to act to render said contacts unresponsive tothe running of the train; and a determinin lever.for said disablingmeans so connected with said armature that it maybe positively 'moved inone direction by the retructive movement of said armature to disengagithe may e moved by the train, andso arranged disabling meanspermittingit to opei to, and that it may be yieldingly moved in theopposite direction by the attractive movement of said armature to admitof-the engagement of the disabling means therewith.

8. A signaling train; signaling contacts operable thereby; anoninterferen'ce magnet; an armaturetherefor; disabling means constantlytending to act to render said'contacts unresponsive to the running ofthe train when'inone position, and adapted to be moved by the train to asecond position rendering said contacts responsive to the running of thetrain; and .a determining lever so connected with said armature that itmay be .positively moved in one direction upon the retractive movementof said armature, and that it may be yieldingly moved in the oppositedirection upon the attractive movement of said armature; saiddetermining lever being adapted to holdsaid disablin means in theposition to which it that upon movement of said armature to retractedposition, said disabling means will not be so held.

9. A.'signaling train; signaling contacts.

operable thereby; a n'oninterference magnet; an armature therefor;disabling means constantly tending to act to render sald contactsunresponsive to .the running of the train; and a determining leveroperated by the retraction of thearmature adapted to hold said disablingmeans ineffective and adapted to be engaged-by a nart' 'moving with saidsignaling contacts to hold said armature in attracted position wheneverthe signaling contacts are in a predetermined position.

10. A signaling train; signaling contacts operable thereby; eanoninterference mag net; an armature therefor; spring actuated disablingmeans constantly tending to act to render said contacts unresponsive tothe runningof the train; and a determining lever for said disablingmeans associated I with said armature and adapted to move independentlythereof, a portion of said lever being disposed in the path of saidarmature to be positively moved by said armature upon retraction thereofand means controlled by the train in running to place the disablingmeans under the control of the determining lever, and also'to restore itfrom disabling position;

11. A signaling train; signaling contacts operablethereby; anoninterference magnet; an armature therefor; spring actuated disablingmeans constantly tending to act to render said contacts unresponsive tothe running 0 'the train; and a determining lever for saiddisablingmeans associated with said armature and adapted to move independentlythereof, a portion of said lever beingdisposed in the path'of' saidarmature to be positively moved by said armature upon retractionthereof; said determining lever being adapted to hold said disablingmeans ineffective and means controlled by the train in running to placethe disabling means under the control of the determining lever, and alsoto' restore it from disabling position.

12., Ajsignaling train; signaling contacts operable thereby; anoninterference magnet;

an armature therefor; disabling means co-n stantly tending to act torender said contacts unresponsive to the running of the train; and adetermining lever adapted .to

hold. said disabling means ineffective, said determining lever beingadapted to be moved out of the path of the coengaging part of saiddisabling means upon a comparatively slight retractive movement of saidarmature, and to be moved by the disabling means out of the path thereofwhile the armature is in attracted position.

13. A signaling train; signaling contacts operable thereby; anoninterference magnet; an armature therefor; disabling means constantlytending to act to render said contacts unresponsive to the running ofthe train; and a determining lever adapted to hold said disabling meansineffective, and so.

governed by the armature that upon movement-of said armature toretracted position the disabling means will not be so held; the trainoperating to move the si nalin con.- tacts into position to be engage bythe disabling means, to be thereby prevented from position; connectionwith the train to controlling the circuit, a releasing means for thetrain adapted foroperatlon upon a very slight movement of the armature,and

the frictional engagement of said releasing means with. the train beingcomparatively slight.

14:. 1A. signaling train; signaling contacts operable thereby; anoninterference magnet; an armature therefor; disabling mechanismadapted. to render said contacts unresponsive to the running of thetrain when I 1n one position, and adapted to assume a second positionrendering said contacts re-- sponsive to the running-of the train;operating means constantly tending to act to move said disablingmechanism to its said first named position; a connectionwith the trainto move said operating means to a position where it will permitsaiddisabling mechanism to move to its said second named position; and adetermininglever adapted to hold said operating means in the position towhich it may be moved by the train, and so governed by the armature thatupon movement of said armature to retracted position the operating meanswill not be so held; the train operating to move the signaling contactsinto position to be engaged by the disabling means, to be therebyprevented from controlling the circuit, a releasing means for the trainadapted for oporation upon a very slight movement of the armature, andthefrictional engagement of said releasing means with th comparativelyslight.

15. 'A. signaling train; signaling contacts operable thereby; anoninterference magnet; an armature therefor; disabling mechanismadapted to render said contacts unresp0ne train being sive to therunning of the train when in one position, and adapted to assume asecond position rendering said contacts responsive to the running of thetrain; operating meaxns constantly tending to act to move said disablingmechanism to its said first named move "said operating means to aposition Where it Will permit said disz'zbling mechanism to move to itssaid second named position; and a determining lever adapted to hold saidoperating means in the position to which it may be moved by the train,and so governed by the armature that upon movement of said armature to;retracted position the operating means will not be so held I 16. Asignaling train; signaling contacts operable thereby; anonil'iterference magnet; an armature therefor; disabling mechanismadapted to render said contacts unresponsive to thegrunning of the trainwhen in one position, and adapted to assume second position, renderingsaid contacts responsiveto the running of the train; oper ating meansconstantly tending to act 'to memes disabling mechanism is in its said;first named pos1t1on; and av dettmnnnng lever adapted to hold saidoperating means 111 the position Where it is acting at greatestadvantage; said determining lever being adapted to be moved out of thepath of the coon gaging part ofsaid operating means upon a comparativelyslight retractive movement of said armature.

17. A signaling train; signaling contacts operable thereby; anoninterference -magnet; an armature therefor; disabling mechanismadapted to render said .contacts unresponsive to the running of thetrain when in one position, and adapted to assume a second. positionrendering said contacts responsive to the running of the train;operating means constantly tending to act to move said disablingmechanism to its said first named positiom and so applied thereto as toact at substantially greater advantage When said-disabling mechanism isin its said second named position than when said dis abling mechanism isin its said first named position; and a determining lever adapted tohold said operating means in the position Where it is acting at greatestadvantage, said determining lever being" adapted to be moved out of, thepath of the coengaging part of said operating means upon a comparatively' slight retractive movement of ;r.

said armature, and to be moved by the operating means out of the paththereof While the armature is in attracted position.

18. A signaling train; a signal wheel I therefor; a circuit controllingcontact ar ranged to be raised by the signal Wheel when the circuit isto be closed, and to be allowed to fall to open the circuit; anoninterference magI1et;'an armature therefor; and disa-- bling meanscontrolled by said armature for moving said circuit controlling contactto a position above that to which it may be moved by said signal Wheel.

19. A signaling train; a signal Wheel therefor; a circuit openingcontact arranged to be a raised by the signal wheel when the circuit isto be closed, and to be allowed to fall to open the circuit; acircuitclosing contact arranged to be raised by the signal Wheel when thecircuit has been opened, and to be alloWed to fall to close the circuit;a noninterference magnet; an armature therefor; and disabling meanscontrolled bysaid armature for holding said circuit opening contact inengagement with said circuit closing contact in spite of the action ofthe signal Wheel upon said circuit closing contact.

20. Air-signaling train; signaling contacts 1,207,:aes

operable thereby; a noninterference magnet; an armature therelflr;disabling mechanism adapted to render said contacts unresponsive to therunning of the train; a latch arm adapted to be cont-rolled by saidarmature, and adapted to move said disabling mechanism to disablingposition; and an operating spring fOl'fSzlld latch arm so appliedthereto that when said latch arm is in control of said armature theoperative effect of said spring uponsaid latch arm will be appliedthereto at only such advantage as to be capable of safely moving saidlatch arm against the friction of its pivot, and so that the operativeeffect of said spring will be applied to said latch arm when said latcharm has moved out of control of said armature at suchadvantage as to becapable of safely moving said'latch arm to operate the disablingmechanism.

, '21. A signaling train; signaling contacts operable thereby; anoninterference magnet; an armature therefor; disabling mechanismadapted to render saidcontacts unresponsive to the running of the train;a determining lever connected with said armature; a latch arm adapted tobe latched'by said determining lever, and adapted to move said disablingmechanism to disabling position; and an operating spring for said latcharm so applied thereto that when said latch arm is in engagement withsaid determining lever the operative effect of said spring upon saidlatch arm will be applied thereto at only such advantage as to becapable of safely moving said latch arm against the friction of itspivot, and so that the operative effect of said spring will be appliedto said latch arm when said latch arm has moved out of engagement'withsaid determining lever at such advantage as to be capable of safelymoving said latch arm to operate the disabling mechanism.

22 A signaling train; signaling contacts operable thereby; anoninterference magnet; an armature therefor; disabling mechanismadapted to render said contacts unresponslve to the running of the tram;a

, determining lever connected with said armature; a latch arm adapted tobe latched by said determining lever, ,and adapted to move'saiddisabling m chanism to disabling position; a connection withjthe trainto move said latch arm to latching position; and an operating spring forsaid latch arm so applied thereto that when said latch arm is inengagement wi h said determining lever the operative effect of saidspring upon said latch arm will beapplied thereto at only such advantageas to be capable of safely moving said latch arm against the friction ofits pivot, and so that the operative efi'ect 0F said spring will beapplied to said latch arm when said latch arnrjhas an armature therefor;a determining leverconnected with said armature; disabling means adaptedto render said contacts unresponsive to the running of the train when inone position, and adapted to assume a second position rendering saidcontacts responsive to the running of the train; said disabling meanscomprising a latch arm and an actuating spring constantly tending tomove said arm'in one direction, said latch arm being adapted to suchcoengagement with the determining lever that said arm may be caught andheld when it has moved to the limit of its-travel in Opposition to suchtendency when the determining lever is in a certain position, andwhereby said coengagement will not occur at any other time, manualstarting means for the train adapted'to move said latch arm intoposition to hold the determining lever, and further Incvable by thetrain to a position for lockingengagement with said lever.

'24. A signaling train;- signaling contacts operable thereby; anoninterference n 5- net; :an armature therefor; a determining leverconnected with said armature; disabling means constantly tending to actto render said contacts unresponsive tothe running of thetrain when inone position, i

prevent movement of the determining lever,

and further movable by the train to move it into position for lockingengagement with said lever.

25. A signaling train; signaling contacts operable therebyanoninterference magnet; an armature therefor; a determining leveryieldingly connected with said armature; disabling means constantlytending to act to render said contacts unresponsive to the running ofthe train when in one position,

.and adapted to assume a second position rendering said contacts-responsive to the running of the train; said disabling means comprisinga latch arm having a hook so positioned with relation to the determininglevel; that a projection from said determining lever willlie' in thepath of said hook when said lever is in one position, and will beWithdrawn from'the path of said'hook Whensaid lever islin anotherposition; said book being so formed that When the deter mining lever isin positioii to be engaged by said hook and-the" latch arm is moved'tocarry said hook past the coengaging portiltn of the determining leverin one direction t engagement between said hook and the deiiemnininglever will cause the coengaging portion of said lever to be moved out ofthe path ofsaid hook and movement of the latch arrnto carry said, hookpast the coengaging portion ofthe determining lever in the otherdirection will be prevented; V j A signalingtrain, sign-ahng-contactsoperable thereby, a non-interference ma net, an armature therefor, 'adetermining lever connected with said armature, a holder adapted torender said contacts unresponsive :to the running of the train, a latcharm adapted to. be controlled by said determin mg lever and to beoperated by the train, a cam operated bysaid latch arm andzadapted toengage the holder whereby the movement of thelatch arm inone directionmay move the'holder to disablethe signaling-contacts,

permitting said holder to be retainedin dis abling position Withoutthereby disturbing the inovementof the latch arm. V

27. A signahngtrain, signaling-contacts operable thereby, anon-interference mags net, an armature therefor, a, deteflnining leverconnected with said armature, a holder adapted to render said contactsunresponslve to the running of the train, a latch arm adapted'to becontrolled by said determining-leverto be operated by the train, a camoperated by the latch arm and adapted to engage the holder whereby thelatch arm'will not act to cause movement of .the' holder when moved fromthe, position whereit may be engaged by the determining-lever until itis moved .apredetermined distance fromsaid engaging position. i

28. A signaling'train, signaling contacts operable thereby, anoninterference magnet, on armature therefor, a holder adaptedto rendersaid contacts unresponsive to the running of the train, a latch armadapted to be controlled by saidarnia'ture, and a'cam face moving withthe latch arm for imparting movement to said holder in one directionwhen the latch arm is rnoving away from the position Where-it may becontrolled by said armature, thereby to holdthe signaling contacts outof the control of the signal Wheel. v

2!). A signaling train; a signal 'Wheel therefor; a signaling leveroperable byv said signal Wheel; a nrminterference magnet; an armaturetherefor; a holder controlledby said arrnattne adapted to rendersaidsigneoms se naling lever unresponsive to g 4 I Wheel; said holder havinga shoulder, and a catch arm pivoted on the signaling lever, the

free end of which is adapted to engage with the signal Wheel and thecatch of Whichis adapted to engage the j shoulder on the said signalholder when said holder is in disabling posi-. tion, thereby to hold thesignaling contacts I in unresponsive position.-

30. A signaling train; a signal Wheel therefor; a signaling leveroperable by said, signal Wheel; a noninterference magnet; an

armature therefor; a holder controlled by.

"said arrnature adapted to render said signaling lever unresponsive tosaid signal Wheel;

i hold the signaling-contacts in unresponsive position and an operatingspring so applied to'said catch arm as to tend toinaintain the signalinglever and the-free end of the catch arm in engagement with the signalWheel,

31. A signaling train; a signal Wheel therefor; a signaling leveroperable by said signal Wheel; a noninterference magnet; an armaturetherefor; a holder controlled by said armature adapted to render saidsignaling lever unresponsive to said signal Wheel; a, catch arm pivotedon the signaling lever, the free end of which isadapted to" engage Withthesignal Wheel and thecatch of which is adapted to engage the'e'dge ofthe holder When said holder is in disabling position; thereby to, holdthe, signaling contacts, in

spring connected to the catch arm at such a point thatthe pivot of saidarmis at one side thereof and the catch and the end for unresponsiveposition, and an operating ti l engaging the signal heel are at theother side thereof. 7 y

32. A signaling train; a signal Wheel therefor; a signaling leverbperable by said signalivheel; a noninterference magnet; an armaturetherefor; a holder controlled by said armature adapted to render saidsignaling lever unresponsive to said signal Wheel; a catch arm .piriotedon the signaling lever,

the free end of whichisadapted to engage with the signal Wheel, and thecatch (if Which is adapted to engage the edge of the holder when saidholder is in disabling position; thereby to hold the signalingcontactsin unresponsive position and an'rnoerating spring so applied to saidcatch arm that either the end of said arin resting upon said signalWheel or the catch may act as a fill crnrn around which said-arm may berocked by said spring to hold the signaling lever in engagelnentiviththe signal Wheel.

33. A signaling train; a signal Wheel therefor; a circuit controllingcontact ar llle tact.

ranged to be raised by the signal wheel when the circuit is to beclosed, and to be allowed to fall to open the circuit; anoninterit'erence magnet; an armature therefor; disabling meanscontrolled by said armature for raising said circuit controlling contactto a position above that to which it maybe raised by said signal wheeland adapted to assume a second position where it will release saidcircuit controlling contact; and means operable by thetrain whereby themovement. of the disabling means from its said first named position toits said second named position will be permitted only when. the signalwheel is in position to support the circuit controlling contact inelevated position. I

34. A signaling train; a signal wheel' therefor; a circuitopeningcontact arranged to be raised by the signal wheel when the circuit is tobe closed, and to be allowed to fall to open the circuit; a circuitclosing contact arranged to be raised by the signal wheel when thecircuit has been opened, and to be allowed to fall to close the circuit;said contacts being so arranged that the circuit open iug contact willnot be sufiiciently raised by the signal wheel to establish a connectionwith the circuit closing contact 'when said circuit closing contact hasbeen raised to the limit of the travel which may be imparted thereto bysaid signal wheel; a noninterferencemagnet; an armature therefor;disabling means controlled by said armature for raising said circuitopening contact to a position above that to which it may be raised bysaid signal wheel and adapted to assume a second position Where it willrelease said circuit opening contact; and means operable by the trainwhereby the movementof the disabling means from its said first namedposition to its said second named position will be permitted only whenthe signal wheel is" in position to support the circuit opening contactand permits the'circuit closing cor.- tact to connect with said circuitopening con- A signaling train; therefor; a circuit opening contactarranged to be raised by the signal wheel when the circuit is to beclosed, and to be allowed to fall to open the circuit; a circuitclosing" contact arranged to be raised by the signal wheel when thecircuit has been opened, and to be allowed to fall to close the circuit;said contacts being so arranged that the circuit opening contact willnot be sufficiently raised by the signal wheel to establish a connectionwith the circuit closing contact when said circuit closing contact hasbeen raised to the limit of the tra'i'el which may be imparted theretoby said signal wheel;

a noninterference magnet; an armature therefor; disabling meanscontrolled by said armature for raising said circuit opening a signalwheel contact to a position where it will hold said circuit closingcontact above the position to' by the movement of the disabling meansfrom its said first named position to its said second named positionwill be permitted only when the signal wheel is in position to supportthe circuit opening contact and permits the circuit closing contact toconnect with said circuit opening contact.

36. A signaling train; a signal Wheel therefor; a circuit openingcontact arranged to be raised by the signal wheel when the circuit is tobe closed, and to be allowed to fall to open the circuit; a. circuitclosing contact arranged to be raised by the signal wheel when thecircuit has been opened, and to be allowed to fall to closethe circuit;said contacts being so arranged that the circuit:

opening contactwill not be sufficiently raised by the signal wheel toestablish a connection with the circuit closing contact when saidcircuit closing contact has been raised to the limit of the travel whichmay be impartedthereto by said signal wheel; a nonintert'erence magnet;an armature therefor; and disabling means controlled by said armaturefor raising said circuit opening contact to a position where it willhold said circuit closing contact above the position-to which it may beraised by said signal wheel while said disabling means is inoneposition, and for holding said circuit opening contact against suchmovement as will enable it to retain connection with the circuit closi gcontact when said circuit closing contact has been raised to the limitof the travel which may be imparted thereto by said signal wheel whilesaid disabling means is in another position.

37. A signaling train; a signal wheel therefor; a circuit openingcontact arranged to be raised-by the signal wheel when the circuit is tobe closed, and to be allowed to fall to open the circuit; a circuitclosing to the limit of the travel which may be im-. parted thereto bysaid signal wheel; a non interference magnet; an armature therefor;disabling means controlled by said arniature for raising said circuitopening contact to a position where it will hold said circuit closingcontactabove the position to which it may be raised by said signal WheelWhile said disabling means is in rmeposition. and for holding saidcircuit opening contact against such movement as Will enable it toretain 'connection with the circuit closing contact when said circuitclosing contact has been raised to the limit of the travel which may beimparted thereto by said signal wheel While said disabling means is inanother position; and means operable by the train whereby the movementof the disabling means from its said first named positionto' its saidsecond named position will be permitted only when the signal Wheel is inposition to support the circuit opening contact and permits the circuitclosing con,- tact to connect With said circuit opening contact. I y

38. A signaling train, a noninterference magnet, an armature therefor,manually disengageable stopping mechanism for the train,

restoring lever controlled-by the stopping mechanism, and a detent forthe train connected to the a ii'mature and so pivoted to said restoringlever ,that when the stopping mechanism is in one position said detentwill act upon each retraction of the armature to suspend the running ofthe train and when .the stopping mechanism is in another posi tion saiddetent will be rendered ineffective.

39. A signaling train; signaling contacts operable thereby, anoninterifercnce magnet, an armature therefor, disabling mechanismadapted to render said contacts unresponsive to the rimming of the traina latch arm controlled by said armature and adapted to more saiddisabling methanism to disabling position, manually disenga'geablestopping mechanism for the train, a restoring lever controlled by thestopping mechanism, and a pivot for the latch arm mounted upon saidrestoring lever in such position that when the stopping mechanism is inposition to stop the train the disabling mechanism will he moved todisabling position regardless of the position. of the latch arm.

4.0. A. signalingtrain; signaling contacts operable thereby; anoninterference magnet; an armature therefor; disabling mechanismadapted to render said contacts unresponsive to the running of the trainwhen in one position, and adapted to assume a second posi tion renderingsaid contacts responsive to the running of thh train; operating meanscontrolled by said armature constantly tending to act to move saiddisabling mechanism to ltssaid first named position; manuallydisengageable stopping mechanism for the train: a restoring'levercontrolled by the stopping mechanism; a connection operated then-Irv Formoving the disabling mechanism to its said first named positionindependent oi the release of said operatingmeans; and an arm movingW1th the stopping mechaan armature tl'iereitor'j spring actuated disabling means constantly tending. to act to rendersuid contactsunresponsive tothe running of" the train; the actuating spring for saidmeans being connected at one end with said means, and at the other endwith the armature to serve as a retractile means therefor, and beingarranged 'to' be applied thereto with varying force so as to apply asubstantially greater retractile force to said armature just prior tothe initiation of a signal than the retractile force applied to saidarmature during the transmission of any signal. v

42., A signaling train; signaling contacts operable thereby; anoninterference magnet; an armature therefor; spring actuated disablingmeans constantly tending to act torender said contacts unresponsive tothe running of the train; the actuating spring of said means beingconnected at one end with said means, and at the other end With thearmature to also serve as retractile means therefor, and being socontrolled by the dis abling means as to apply a substantially greaterretractile force to said ari'na'ture ust prior to the initiation of asignal than the retractile force applied to said armatureduring thetransmission of any signal.

43. A signaling train; signaling contacts operable thereby; anonmtert'erence magnet; an armature therefor; disabling means adapted torender said contacts unresponsive to the running of the train when inone positionyand adapted to assumea second position rendering saidcontacts responsive to the running of the train; a connection with thetrain to move said disabling means to its said second named position; adeterminmg lever adapted to hold said disabling 'meansin the position towhich it may be moved by the train, and'so governed by the armature thatupon movement of said armature to retracted position the disabling meanswill not be so held and means tending to keep said determining lever inthepa th o'f the part of the disabling means adapted to engage therewithwhile the arma- J20.v ture is in attracted position, whereby the tionrendering said contacts responsive to the running of the train;operating means constantly tending to move said disabling mechanism toits said first named position; a connection with the train to move saidoperating means to a position where it will. permit said disablingmechanism to move,

to its said second named position; a determining lever adapted to holdsaid operating means in the position to which it may be moved by thetrain, and ,so governed by the armature that upon movement of saidarmature to retracted position the operating means will not be so held;and means tending to keep said determining lever in the path of the partof the operating means adapted to engage therewith while the armature isin attracted position, whereby the retractile force applied to saidarmature will be materially increased when the operating means is beingso moved by the train.

45. A signaling train; signaling contactsoperable thereby; anonmterference magnet; an armature therefor; disabling mechanism adaptedto render said contacts unresponsive to the running of the train when inone position, and adapted to assume a second position rendering saidcontacts responsive to the running of-the train;'operat1ng meansgoverned by said armature and constantly tending to move said disablingmechanism to its said first named position; a connection with the trainto move said operating means to a position where it will permit saiddisabling mechanism to move named position; and a retractile spring forsaid armature adapted to be so influenced by said operatin means thatthe retractile ttorce applied to sa d armature will be materiallydecreased when the operating means has been so moved by the train.

In witness whereof, we have hereunto subscribed our names this 18th dayof February, A. D., 1915. i a

C. E. BEACH.

. L. J.- VOORHEES.

' Witnesses:

H. F. Homes, EQH. DUFFY- to its said segqnd

